title: Trickbot Malware Activity
id: 58bf96d9-ff5f-44bd-8dcc-1c4f79bf3a27
related:
    - id: c37510b8-2107-4b78-aa32-72f251e7a844
      type: similar
status: stable
description: Detects Trickbot malware process tree pattern in which "rundll32.exe" is a parent of "wermgr.exe"
references:
    - https://twitter.com/swisscom_csirt/status/1331634525722521602?s=20
    - https://app.any.run/tasks/f74c5157-8508-4ac6-9805-d63fe7b0d399/
author: Florian Roth (Nextron Systems)
date: 2020-11-26
modified: 2021-11-27
tags:
    - attack.execution
    - attack.t1559
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\wermgr.exe'
        ParentImage|endswith: '\rundll32.exe'
        ParentCommandLine|contains: 'DllRegisterServer'
    condition: selection
falsepositives:
    - Unknown
level: high